Changing Appearance Of Category Boxes

Hi,

I want to change the appearance of category boxes so they look like those in Screenshot #4 on the Directory page.

i.e. From this:

http://test.pixelrat.com/wp-content/uploads/2013/03/existing.png

To This:

http://test.pixelrat.com/wp-content/uploads/2013/03/required.png

Cheers

Mark